Is it a Good Practice to put Battery(1.5Volts) with Opposite Polarity

I have Logitech Wireless Keyboard and Mouse. Batteries inserted in Key Board work for a long time but Mouse consumes the batteries within a week. I was curious to know if after using the mouse when it is idle should I put the battery in Opposite Polarity in Mouse to use Battery Longer? I mean putting +ve end at -ve and vice versa. Is it a safe practice?
